Our board

The Thames Water Utilities Limited Board comprises of the Chairman, three Executive Directors, namely the Chief Executive Officer (CEO), Chief Financial Officer (CFO) and the Director of Strategy and Regulation and ten Non-Executive Directors, six of whom are independent.

Between them, the directors have a wealth of management and financial experience, together with extensive specialist knowledge of the water industry and other regulated utilities.

Both our Board and Ofwat consider seven of the Directors to be Independent Non-Executives.

The current members of our Board are listed below:


Ian Marchant

Ian became Chairman on 26 January 2018 after joining the Thames Water Utilities Limited Board on 1 December 2017 as an Independent Non-Executive Director.

Ian spent 21 years at SSE Plc, most recently as Chief Executive and prior to that as Finance Director, before his retirement in June 2013. Ian is currently Independent Chairman of John Wood Group plc, Chair of Nova Innovation Ltd and Maggie’s Cancer Charity and a Non-Executive Director of Aggreko plc. Through his company Dunelm Energy, he advises and invests in start-up businesses.

He is a visiting professor at Edinburgh and Durham University Business Schools and chairs the Strathclyde University CEP advisory Board. Ian is also the founder of the Scotland lights up Malawi Campaign for Climate Justice and was recently appointed Honorary President of the Royal Zoological Society of Scotland. Ian is the former Chairman, and founder of Scotland 2020 Climate Group, and served as the President of the Energy Institute and Chairman of the renewable energy Firm, Infinis.

Executive directors

Steve Robertson, Chief Executive Officer

Steve Robertson became CEO of TWUL in September 2016, having previously held the position of Chief Executive Officer at Truphone, where he developed ground breaking technology allowing it to become a disruptive player in the global market.

More about Steve

Brandon Rennet, Chief Financial Officer

Brandon Rennet joined TWUL March 2017 as Chief Financial Officer.

More about Brandon

Nick Fincham, Strategy and Regulation Director

Nick was appointed to the TWUL Board on 1 April 2016. Since April 2011, Nick has been a member of TWUL's Executive Committee as Director of Strategy and Regulation.

More about Nick

Independent non-executive directors

Lorraine Baldry OBE

Lorraine was appointed as an independent non-executive director of TWUL in September 2014. Lorraine has over 40 years experience in a wide range of industries including Technology, Broadcasting, Distribution, Real Estate and Financial Services. Lorraine is Chairman of London & Continental Railways, Schroder Real Estate Investment Trust Limited, Inventa Partners Ltd and Tri-Air Developments Ltd.

She is the Senior Independent Director of Circle Holdings (UK) plc and a Governor at the University of the Arts London. Lorraine was Chief Executive of Chesterton International plc and prior to that held various senior positions at Prudential Corporation, Morgan Stanley and Regus. She is a former Chairman of London Thames Gateway Development Corporation and Central London Partnership and non-executive director of St Ives plc and DTZ Holdings plc. Lorraine was also a Board Member of the Olympic Delivery Authority.

Lorraine is an Honorary Member of the Royal Institution of Chartered Surveyors and a Past President of the British Property Federation. She was awarded OBE in the Queen’s Jubilee Honours.

Alistair Buchanan

Alistair was appointed as an independent non-executive director of Thames Water Utilities Limited in July 2018. Prior to joining Thames Water, Alistair was Chief Executive Officer of Ofgem (UK's gas and electricity markets regulator) from 2003 to 2013, during which time he also sat on the Boards of Durham University and Scottish Water.

In 2013 Alistair re-joined KPMG, where he had qualified as a chartered accountant, as Chairman and Partner of the UK Utilities Practice until his retirement in 2018. Before joining Ofgem, he spent the majority of his career in financial services with investment banks where he was the top ranked analyst in his sector.

Alistair was awarded a CBE in 2008 for services to energy policy making. Alistair also currently sits on the Board of the Royal Holloway University.

Dame Deirdre Hutton CBE

Dame Deirdre Hutton was appointed as an independent non-executive director of Thames Water Utilities in July 2010. She is Chair of the Civil Aviation Authority, Pro-Chancellor of Cranfield University, and a non-executive director of Castle Trust. She was a non-executive member of the Treasury, was previously Chair of both the National Consumer Council and Food Standards Agency and is currently Vice President of the Trading Standards Institute and Deputy Chair of the Financial Services Authority. She has also held a number of positions on a variety of bodies dealing with food issues.

Nick Land

Nick became a non-executive director of TWUL in February 2017. A chartered accountant, Nick retired as Chairman of Ernst & Young LLP in 2006 after a career spanning 36 years with the firm. He became an audit partner in 1978 and held a number of management appointments before becoming Managing Partner in 1992. He was elected Chairman in 1995 and joined the Global Executive Board at that time. He was also Chairman of Ernst & Young’s Northern Europe, India, Middle East and Africa Region.

Nick is a non-executive director of the Financial Reporting Council and a non-executive director of Vodafone Group plc. He stepped down as a non-executive director of Ashmore Group plc in October 2016, BBA Aviation plc in May 2016, Alliance Boots GmbH in 2015 and Royal Dutch Shell plc in 2010. He is an adviser to the board of Dentons UKEMEA LLP and Silicon Valley Bank London and chairs the Private Equity Reporting Group of the British Venture Capital Association.

He is also chairman of the board of trustees of the Vodafone Group Foundation.

Ian Pearson

Ian Pearson was appointed as an Independent Non-Executive Director of Thames Water Utilities Limited in September 2014. He is the Chairman of Code Investing Limited and was previously the Chairman of Octopus VCT2 plc.

Amongst other advisory roles he was a member of PwC’s UK Advisory Board for five years, before stepping down in 2016. He held various roles in Government between 2001 and 2010 when he stood down as an MP. He was Economic Secretary to the Treasury between 2008 and 2010, and prior to that he was the Science and Innovation Minister, Minister for Climate Change and the Environment, Minister for Trade and as a Minister in Northern Ireland.

Ian studied PPE at Balliol College, Oxford, before gaining a Masters and Doctorate at the University of Warwick.

Ed Richards CBE

Ed Richards was appointed as an independent non-executive director of TWUL in July 2010. He was Chief Executive of Ofcom until December 2014, having previously been the Chief Operating Officer. He was previously a senior policy advisor to the Prime Minister for media, telecoms, the internet and e-government and Controller of Corporate Strategy at the BBC. He is currently leading the independent review of financial services trade associations and is also a Director of Donmar Warehouse and a Governor of the London School of Economics.

Non-executive directors

Kenton Bradbury

Kenton was appointed a Non-Executive Director of TWUL in May 2017. He is currently Managing Director, Asset Management at OMERS Infrastructure where he is responsible for the active management of several investments, with a focus on Europe. His asset management experience includes: Caruna, Ellevio, NET4GAS, Scotia Gas Networks and Tank & Rast.

Kenton previously served as a Director at Infracapital (the infrastructure investment arm of M&G Investments), where he sat on the boards of various portfolio companies. Prior to Infracapital, he was SVP Infrastructure and Regulation at e.on, based in Germany. He began his career as a consultant working in the utilities and space sectors, and has held various senior operational and strategic roles in infrastructure businesses.

Kenton has a First Class Honours degree in engineering from Cambridge University, has attended the program for management development at Harvard, and is a member of the Institute of Engineering and Technology.

Christopher Deacon

Christopher became a non-executive director of TWUL in December 2006. He brings extensive experience as a banker and advisor in major infrastructure and project finance.

Presently, he is an adviser to OFGEM on the offshore wind transmission programme and a member of the Investment Committee for the Dutch Infrastructure Fund.

He is a non-executive director of various other companies and a Member of the Franco British Council.

Guy Lambert

Guy became a non-executive director of TWUL in October 2014. Guy has been with the Abu Dhabi Investment Authority in the Infrastructure Division since February 2008, and currently heads up the utilities business globally within the Infrastructure Division.

Guy is responsible for sourcing and executing new investments in the utilities sector and overseeing the existing utilities portfolio.

Guy’s previous roles include Corporate Finance and Advisory Manager at Macquarie Capital London and Corporate Finance and Advisory Analyst at Dresdner Kleinwort Wasserstein. Guy has an MSc in Economics from Erasmus University in Rotterdam, Netherlands.

Greg Pestrak

Greg Pestrak was appointed as a non-executive director of TWUL in November 2017. Greg is an Executive Vice President at Wren House Infrastructure, where his focus is on Asset Management across the portfolio, which in addition to Thames Water includes other regulated and non-regulated global assets. Prior to joining Wren House, Greg was a Partner in KPMG’s Global Strategy Group based in the UK, where he was the Infrastructure lead since 2009.

Greg has over 17 years consulting experience, working with Investors and Corporates to drive performance improvement in response to transactions, changes in the market, customer or regulatory environment or financial pressure, bringing an independent and constructively challenging perspective to business and operating models.

Greg’s recent experience includes leading engagements in the UK and Globally in the Water, Power Generation, Transmission, and Distribution, Telecoms, Transport, and Infrastructure Services sectors.

Prior to his career in consulting, Greg worked in Finance with Rothschild Asset Management and Jardine Fleming Asset Management in Hong Kong and the UK. Greg holds a Sloan Fellowship Masters in Management from the London Business School and B.A. from The University of King’s College, Canada.